please review 'application/pdf'

[Larry Masinter]

> > In the end, it's just a file format that includes an
> > some ACL bits. It seems legitimate to describe what
> > ACL bits are intended to mean in a description of
> > a protocol or protocol element or file format,
> > whatever the mechanisms might be for actual enforcement
> > of those bits.
> 
> yup.  just as long as there isn't any statement to the effect that 
> implementations are expected to honor those bits.

In HTTP, the "cache-control: private" directive is defined
with normative language for HTTP implementations about which
bits they may or may not "share" with other users. Shared
cache implementations are expected to honor "cache-control: private";
those that disregard the directive are non-compliant.

Larry